How to learn/play ADC?

Hey guys! I'm a Season 7 Silver 5 support main and I have been playing for about 10 and a half months now. I want to learn to play ADC because I don't enjoy playing support and bought blitzcrank about half a year ago just to play my placements on. I'm not sure how to learn to get better at ADC because so far, I mainly play Draven ADC and I am about to get mastery 4 on him (I know I'm still bad on him). In my opinion, Draven is very different from other ADCs because he has a better early game and doesn't really teach you how to trade, freeze, position, or team fight very well because you either get too far behind or you get so fed that you can just walk up and destroy them. He also has no outplay potential and falls off pretty hard late. Is there any good ADCs that can teach me how to do this, but also has a pretty good one-trick potential if I decide to main him/her later on? As of right now, I honestly have no preference, except probably not Kalista because if I was in ranked, my silver teammates might not hit my ult or something. Thanks for any suggestions!